Home-IoT/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2024-11-27 09:18:00 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

Add crystal freq define

Browse source
This commit is contained in:
Jonathan Swoboda 2024-10-21 22:05:21 -04:00
parent a8bca5b75e
commit 7efee6d53a
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
esphome/components/sx127x/sx127x.cpp
View file

@ -6,6 +6,7 @@ namespace esphome {
namespace sx127x {
static const char *const TAG = "sx127x";
static const uint32_t FXOSC = 32000000u;
void IRAM_ATTR HOT SX127xStore::gpio_intr(SX127xStore *arg) {
if (arg->dio2_set && arg->dio2_toggle) {
@ -103,7 +104,7 @@ void SX127x::configure() {
delay(1);
// set freq
uint64_t frf = ((uint64_t) this->frequency_ << 19) / 32000000;
uint64_t frf = ((uint64_t) this->frequency_ << 19) / FXOSC;
this->write_register_(REG_FRF_MSB, (uint8_t) ((frf >> 16) & 0xFF));
this->write_register_(REG_FRF_MID, (uint8_t) ((frf >> 8) & 0xFF));
this->write_register_(REG_FRF_LSB, (uint8_t) ((frf >> 0) & 0xFF));
@ -118,7 +119,7 @@ void SX127x::configure() {
// set bitrate
if (this->bitrate_ > 0) {
uint64_t bitrate = (32000000u + this->bitrate_ / 2) / this->bitrate_;
uint64_t bitrate = (FXOSC + this->bitrate_ / 2) / this->bitrate_; // round up
this->write_register_(REG_BITRATE_MSB, (uint8_t) ((bitrate >> 8) & 0xFF));
this->write_register_(REG_BITRATE_LSB, (uint8_t) ((bitrate >> 0) & 0xFF));
bit_sync = BIT_SYNC_ON;
@ -287,7 +288,7 @@ void SX127x::dump_config() {
static const uint16_t RAMP_LUT[16] = {3400, 2000, 1000, 500, 250, 125, 100, 62, 50, 40, 31, 25, 20, 15, 12, 10};
uint32_t rx_bw_mant = 16 + (this->rx_bandwidth_ >> 3) * 4;
uint32_t rx_bw_exp = this->rx_bandwidth_ & 0x7;
float rx_bw = (float) 32000000 / (rx_bw_mant * (1 << (rx_bw_exp + 2)));
float rx_bw = (float) FXOSC / (rx_bw_mant * (1 << (rx_bw_exp + 2)));
ESP_LOGCONFIG(TAG, "SX127x:");
LOG_PIN(" NSS Pin: ", this->nss_pin_);
LOG_PIN(" RST Pin: ", this->rst_pin_);